单芽狗脊营养器官的解剖学研究
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引用本文:叶红环,廖海民,苟光前,何选泽,郑 涛,代朝霞.单芽狗脊营养器官的解剖学研究[J].西北植物学报,2019,39(7):1154~1162
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作者单位
叶红环1,廖海民1,苟光前1,2,何选泽1,郑 涛1,代朝霞3* (1 贵州大学 生命科学学院贵阳 5500252 贵州大学 竹类研究所贵阳 5500253 贵州大学 林学院贵阳 550025) 
基金项目:国家科技支撑计划(2015BAD04B02)
中文摘要:采用离析法和石蜡切片法对单芽狗脊营养器官进行形态解剖研究。结果表明:单芽狗脊叶为异面叶,上、下表皮细胞均为不规则型,仅下表皮有气孔器分布;叶柄维管束有2~6个,自叶柄基部向上至叶轴仅有2个较大的维管束;根状茎薄壁细胞之间有多个维管束散生分布,且富含丰富的淀粉粒;皮层在根的横切结构中占比较大,木质部的发育方式为外始式;单芽狗脊珠芽的发育过程分为三个阶段,珠芽原基的形成期、珠芽原基的分化期、成熟期。
中文关键词:单芽狗脊    叶柄  根状茎    珠芽
 
Anatomical Study on Vegetative Organs of Woodwardia unigemmata
Abstract:The morphological anatomy of the vegetative organs of the Woodwardia unigemmata was studied by the method of segregation and paraffin sectioning. It indicated that: W. unigemmata leaves were heterologous leaves. The upper and lower epidermis cells were irregular, and only the lower epidermis had stomatal distribution. There are 2 to 6 vascular bundles in petiole, only 2 larger vascular bundles from petiole base up to leaf axis. Rhizome have multiple vascular bundles scattered among the parenchyma cells, and rich starch grains in parenchyma cells. Cortex takes up a large proportion in the transverse structure of roots, and xylem develops in an exogenous manner. The development process of W. unigemmata bulbil can be divided into three stages: the formation stage of bulbil primordium, the differentiation stage and the maturation stage of bulbil primordium.
keywords:Woodwardia unigemmata  leaf  petiole  rhizome  root  bulbil
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